From Old French géométrie, from Latin geometria, from Ancient Greek γεωμετρία (geōmetría, geometry, land-survey), from γεωμέτρης (geōmétrēs, land measurer), from γῆ (, earth, land, country) + -μετρία (-metría, measurement), from μέτρον (métron, a measure).

Doublet of gematria.


  • (US) IPA(key): /d͡ʒiˈɑm.ə.tɹi/
    • (file)
  • (UK) IPA(key): /d͡ʒiːˈɒm.ɪ.tɹi/, /ˈd͡ʒɒm.ɪ.tɹi/


geometry (countable and uncountable, plural geometries)

  1. (mathematics, uncountable) The branch of mathematics dealing with spatial relationships.
    • 1925, David Eugene Smith, Marcia Latham (translators), René Descartes, The Geometry of Rene Descartes, [1637, La Géométrie], 2007, Cosimo Classics, page 2,
      ANY problem in geometry can easily be reduced to such terms that a knowledge of the lengths of certain straight lines is sufficient for its construction.
  2. (mathematics, often qualified in combination, countable) A mathematical system that deals with spatial relationships and that is built on a particular set of axioms; a subbranch of geometry which deals with such a system or systems.
    • 1975 [Addison-Wesley], Eugene F. Krause, Taxicab Geometry, 1986, Dover, page 64,
      Entire new geometries are also suggested by real-world cities.
    • 2004, Judith Cederberg, A Course in Modern Geometries, Springer, page 1,
      Finite geometries were developed in the late nineteenth century, in part to demonstrate and test the axiomatic properties of completeness, consistency, and independence.
    • 2006, Mark Wagner, The Geometries of Visual Space, Lawrence Erlbaum Associates, page ix,
      Previous theorists have often tried to test whether visual space is best described by a small set of traditional geometries, such as the Euclidean geometry most of us studied in High School or the hyperbolic and spherical geometries introduced by 19th-century mathematicians.
  3. (countable) The observed or specified spatial attributes of an object, etc.
    • 2003, Matt Welsh, Running Linux, page 74:
      Also, certain SCSI controllers need to be told where to find drive geometry in order for Linux to recognize the layout of your drive.
    • 2018 March 14, Roger Penrose, 'Mind over matter': Stephen Hawking – obituary, in The Guardian,
      He was extremely highly regarded, in view of his many greatly impressive, sometimes revolutionary, contributions to the understanding of the physics and the geometry of the universe.
  4. (algebraic geometry, countable) A mathematical object comprising representations of a space and of its spatial relationships.


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